How to discover the memory clock speed
Hi,
I am planning to buy more memory for my notebook. I know the memory is DDR2, but I do not know if it is 800 or 667. Does anyone knows a command to discover about the memory clock? Thanks. root@darkstar:/home/cristiano# lshw darkstar description: Computer product: Aspire 5050 vendor: Acer, inc. version: Not Applicable serial: LXAXD0C0057100A3952502 width: 32 bits capabilities: smbios-2.4 dmi-2.4 smp-1.4 smp configuration: boot=oem-specific cpus=1 uuid=C09703C1-B887-D811-8CC4-001636FC4154 *-core description: Motherboard product: Prespa M vendor: Acer, Inc. physical id: 0 version: Not Applicable serial: LXAXD0C0057100A3952502 *-firmware description: BIOS vendor: Acer physical id: 0 version: v1.3303 (01/23/07) size: 107KiB capacity: 960KiB capabilities: isa pci pcmcia pnp upgrade shadowing escd cdboot acpi usb biosbootspecification *-cpu description: CPU product: AMD Turion(tm) 64 Mobile Technology MK-38 vendor: Advanced Micro Devices [AMD] physical id: 4 bus info: cpu@0 version: 15.12.2 slot: Socket M2/S1G1 size: 2200MHz capacity: 2200MHz width: 64 bits clock: 133MHz capabilities: boot fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp x86-64 3dnowext 3dnow up pni cx16 lahf_lm svm extapic cr8_legacy *-cache:0 description: L2 cache physical id: 5 slot: L2 Cache size: 512KiB capacity: 1MiB capabilities: synchronous internal write-back *-cache:1 description: L1 cache physical id: 0 size: 128KiB *-cache:2 description: L2 cache physical id: 1 size: 512KiB *-memory description: System Memory physical id: 1b slot: System board or motherboard size: 1GiB *-bank:0 description: DIMM DDR2 Synchronous physical id: 0 slot: S1 size: 512MiB width: 64 bits *-bank:1 description: DIMM DDR2 Synchronous physical id: 1 slot: S2 size: 512MiB width: 64 bits *-pci:0 description: Host bridge product: RS480 Host Bridge vendor: ATI Technologies Inc physical id: 100 bus info: pci@0000:00:00.0 version: 10 width: 32 bits clock: 66MHz configuration: latency=64 *-pci:0 description: PCI bridge product: RS480 PCI Bridge vendor: ATI Technologies Inc physical id: 1 bus info: pci@0000:00:01.0 version: 00 width: 32 bits clock: 66MHz capabilities: pci ht normal_decode bus_master cap_list resources: ioport:9000(size=4096) memory:d0100000-d01fffff ioport:d4000000(size=67108864) *-display description: VGA compatible controller product: RS482 [Radeon Xpress 200M] vendor: ATI Technologies Inc physical id: 5 bus info: pci@0000:01:05.0 version: 00 width: 32 bits clock: 66MHz capabilities: pm vga_controller bus_master cap_list rom configuration: driver=fglrx_pci latency=255 mingnt=8 resources: irq:17 memory:d4000000-d7ffffff(prefetchable) ioport:9000(size=256) memory:d0100000-d010ffff memory:d0120000-d013ffff(prefetchable) *-pci:1 description: PCI bridge product: RS480 PCI Bridge vendor: ATI Technologies Inc physical id: 4 bus info: pci@0000:00:04.0 version: 00 width: 32 bits clock: 33MHz capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list configuration: driver=pcieport-driver resources: irq:0 memory:d0200000-d02fffff *-network description: Wireless interface product: AR242x 802.11abg Wireless PCI Express Adapter vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:02:00.0 logical name: wifi0 version: 01 serial: 00:19:7d:f7:17:2a width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list logical ethernet physical wireless configuration: broadcast=yes driver=ath_pci ip=192.168.1.2 latency=0 multicast=yes wireless=IEEE 802.11g resources: irq:16 memory:d0200000-d020ffff *-pci:2 description: PCI bridge product: RS480 PCI Bridge vendor: ATI Technologies Inc physical id: 5 bus info: pci@0000:00:05.0 version: 00 width: 32 bits clock: 33MHz capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list configuration: driver=pcieport-driver resources: irq:0 *-pci:3 description: PCI bridge product: RS480 PCI Bridge vendor: ATI Technologies Inc physical id: 6 bus info: pci@0000:00:06.0 version: 00 width: 32 bits clock: 33MHz capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list configuration: driver=pcieport-driver resources: irq:0 *-pci:4 description: PCI bridge product: RS480 PCI Bridge vendor: ATI Technologies Inc physical id: 7 bus info: pci@0000:00:07.0 version: 00 width: 32 bits clock: 33MHz capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list configuration: driver=pcieport-driver resources: irq:0 *-ide:0 description: IDE interface product: IXP SB400 Serial ATA Controller vendor: ATI Technologies Inc physical id: 12 bus info: pci@0000:00:12.0 logical name: scsi2 version: 80 width: 32 bits clock: 66MHz capabilities: ide pm msi bus_master cap_list rom emulated configuration: driver=sata_sil latency=64 resources: irq:22 ioport:8440(size=8) ioport:8434(size=4) ioport:8438(size=8) ioport:8430(size=4) ioport:8400(size=16) memory:d0004000-d00041ff memory:54000000-5407ffff(prefetchable) *-disk description: ATA Disk product: Hitachi HTS54161 vendor: Hitachi physical id: 0.0.0 bus info: scsi@2:0.0.0 logical name: /dev/sda version: SBDO serial: SB2D41E4JDZKDE size: 111GiB (120GB) capabilities: partitioned partitioned:dos configuration: ansiversion=5 signature=2dfc2dfb *-volume:0 description: Windows NTFS volume physical id: 1 bus info: scsi@2:0.0.0,1 logical name: /dev/sda1 logical name: /mnt/sda1 version: 3.1 serial: b04f71d8-d6af-4549-b7bf-e806d3450ee4 size: 19GiB capacity: 19GiB capabilities: primary bootable ntfs initialized configuration: clustersize=4096 created=2009-05-25 02:08:19 filesystem=ntfs mount.fstype=fuseblk mount.options=rw,nosuid,nodev,noexec,user_id=0,group_id=0,allow_other,blksize=4096 state=mounted *-volume:1 description: Linux swap volume physical id: 2 bus info: scsi@2:0.0.0,2 logical name: /dev/sda2 version: 1 serial: 854c0ce2-f237-4d12-8e4d-fffbc752ed44 size: 972MiB capacity: 972MiB capabilities: primary nofs swap initialized configuration: filesystem=swap pagesize=4096 *-volume:2 description: Linux filesystem partition physical id: 3 bus info: scsi@2:0.0.0,3 logical name: /dev/sda3 logical name: /home version: 3.6 serial: 20e25881-4027-448b-ba1f-fbe71bd9e5cd size: 46GiB capacity: 46GiB capabilities: primary journaled reiserfs initialized configuration: filesystem=reiserfs hash=r5 mount.fstype=reiserfs mount.options=rw state=mounted *-volume:3 description: Extended partition physical id: 4 bus info: scsi@2:0.0.0,4 logical name: /dev/sda4 size: 44GiB capacity: 44GiB capabilities: primary extended partitioned partitioned:extended *-logicalvolume:0 description: Linux filesystem partition physical id: 5 logical name: /dev/sda5 logical name: / capacity: 18GiB configuration: mount.fstype=reiserfs mount.options=rw state=mounted *-logicalvolume:1 description: Linux filesystem partition physical id: 6 logical name: /dev/sda6 logical name: /mnt/sda6 capacity: 17GiB configuration: mount.fstype=reiserfs mount.options=rw,nosuid,nodev,noexec state=mounted *-logicalvolume:2 description: HPFS/NTFS partition physical id: 7 logical name: /dev/sda7 logical name: /mnt/sda7 capacity: 8730MiB configuration: mount.fstype=vfat mount.options=rw,nosuid,nodev,noexec,fmask=0000,dmask=0000,allow_utime=0022,codepage=cp437,iocharset =iso8859-1 state=mounted *-usb:0 description: USB Controller product: IXP SB400 USB Host Controller vendor: ATI Technologies Inc physical id: 13 bus info: pci@0000:00:13.0 version: 80 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci_hcd latency=64 resources: irq:19 memory:d0005000-d0005fff *-usbhost product: OHCI Host Controller vendor: Linux 2.6.27.7-smp ohci_hcd physical id: 1 bus info: usb@2 logical name: usb2 version: 2.06 capabilities: usb-1.10 configuration: driver=hub slots=4 speed=12.0MB/s *-usb description: Mouse product: USB-PS/2 Optical Mouse vendor: Logitech physical id: 3 bus info: usb@2:3 version: 18.00 capabilities: usb-2.00 configuration: driver=usbhid maxpower=98mA speed=1.5MB/s *-usb:1 description: USB Controller product: IXP SB400 USB Host Controller vendor: ATI Technologies Inc physical id: 13.1 bus info: pci@0000:00:13.1 version: 80 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci_hcd latency=64 resources: irq:19 memory:d0006000-d0006fff *-usbhost product: OHCI Host Controller vendor: Linux 2.6.27.7-smp ohci_hcd physical id: 1 bus info: usb@3 logical name: usb3 version: 2.06 capabilities: usb-1.10 configuration: driver=hub slots=4 speed=12.0MB/s *-usb:2 description: USB Controller product: IXP SB400 USB2 Host Controller vendor: ATI Technologies Inc physical id: 13.2 bus info: pci@0000:00:13.2 version: 80 width: 32 bits clock: 66MHz capabilities: pm ehci bus_master cap_list configuration: driver=ehci_hcd latency=64 resources: irq:19 memory:d0007000-d0007fff *-usbhost product: EHCI Host Controller vendor: Linux 2.6.27.7-smp ehci_hcd physical id: 1 bus info: usb@1 logical name: usb1 version: 2.06 capabilities: usb-2.00 configuration: driver=hub slots=8 speed=480.0MB/s *-usb description: Video product: AcerOrbiCam vendor: SuYin physical id: 3 bus info: usb@1:3 version: 1.00 serial: CN0316-OV03-VA-01.00.00 capabilities: usb-2.00 configuration: driver=uvcvideo maxpower=500mA speed=480.0MB/s *-serial description: SMBus product: IXP SB400 SMBus Controller vendor: ATI Technologies Inc physical id: 14 bus info: pci@0000:00:14.0 version: 83 width: 32 bits clock: 66MHz capabilities: ht cap_list configuration: driver=piix4_smbus latency=0 resources: irq:0 ioport:8410(size=16) memory:fed00000-fed003ff *-ide:1 description: IDE interface product: IXP SB400 IDE Controller vendor: ATI Technologies Inc physical id: 14.1 bus info: pci@0000:00:14.1 version: 80 width: 32 bits clock: 66MHz capabilities: ide msi bus_master cap_list configuration: driver=ATIIXP_IDE latency=0 resources: irq:16 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:8420(size=16) *-ide:0 description: IDE Channel 0 physical id: 0 bus info: ide@0 logical name: ide0 clock: 66MHz *-cdrom description: DVD-RAM writer product: HL-DT-ST DVDRAM GSA-T10N physical id: 0 bus info: ide@0.0 logical name: /dev/hda version: PP02 serial: KZ671NJ2154 capabilities: packet atapi cdrom removable nonmagnetic dma lba iordy pm audio cd-r cd-rw dvd dvd-r dvd-ram configuration: mode=udma2 status=nodisc *-ide:1 description: IDE Channel 1 physical id: 1 bus info: ide@1 logical name: ide1 clock: 66MHz *-multimedia description: Audio device product: IXP SB4x0 High Definition Audio Controller vendor: ATI Technologies Inc physical id: 14.2 bus info: pci@0000:00:14.2 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: driver=HDA Intel latency=64 resources: irq:16 memory:d0000000-d0003fff *-isa description: ISA bridge product: IXP SB400 PCI-ISA Bridge vendor: ATI Technologies Inc physical id: 14.3 bus info: pci@0000:00:14.3 version: 80 width: 32 bits clock: 66MHz capabilities: isa bus_master configuration: latency=0 *-pci:5 description: PCI bridge product: IXP SB400 PCI-PCI Bridge vendor: ATI Technologies Inc physical id: 14.4 bus info: pci@0000:00:14.4 version: 80 width: 32 bits clock: 66MHz capabilities: pci subtractive_decode bus_master resources: ioport:a000(size=4096) memory:d0300000-d03fffff memory:50000000-53ffffff(prefetchable) *-pcmcia description: CardBus bridge product: CB-712/4 Cardbus Controller vendor: ENE Technology Inc physical id: 1 bus info: pci@0000:08:01.0 version: 10 width: 32 bits clock: 33MHz capabilities: pcmcia bus_master cap_list configuration: driver=yenta_cardbus latency=176 maxlatency=5 mingnt=192 resources: irq:23 memory:d0300000-d0300fff ioport:a400(size=256) ioport:a800(size=256) memory:50000000-53ffffff(prefetchable) memory:58000000-5bffffff *-memory:0 UNCLAIMED description: FLASH memory product: ENE PCI Memory Stick Card Reader Controller vendor: ENE Technology Inc physical id: 1.1 bus info: pci@0000:08:01.1 version: 01 width: 32 bits clock: 33MHz (30.3ns) capabilities: pm bus_master cap_list configuration: latency=64 maxlatency=4 mingnt=1 resources: memory:d0301000-d030107f *-generic description: SD Host controller product: ENE PCI Secure Digital Card Reader Controller vendor: ENE Technology Inc physical id: 1.2 bus info: pci@0000:08:01.2 version: 01 width: 32 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: driver=sdhci-pci latency=64 maxlatency=72 mingnt=32 resources: irq:22 memory:d0301400-d03014ff *-memory:1 UNCLAIMED description: FLASH memory product: FLASH memory: ENE Technology Inc: vendor: ENE Technology Inc physical id: 1.3 bus info: pci@0000:08:01.3 version: 01 width: 32 bits clock: 33MHz (30.3ns) capabilities: pm bus_master cap_list configuration: latency=64 maxlatency=4 mingnt=1 resources: memory:d0301800-d030187f *-memory:2 description: FLASH memory product: SD/MMC Card Reader Controller vendor: ENE Technology Inc physical id: 1.4 bus info: pci@0000:08:01.4 version: 01 width: 32 bits clock: 33MHz (30.3ns) capabilities: pm cap_list configuration: driver=sdhci-pci latency=0 maxlatency=72 mingnt=32 resources: irq:22 memory:d0301100-d03011ff *-network description: Ethernet interface product: RTL-8139/8139C/8139C+ vendor: Realtek Semiconductor Co., Ltd. physical id: 2 bus info: pci@0000:08:02.0 logical name: eth0 version: 10 serial: 00:16:36:fc:41:54 size: 10MB/s capacity: 100MB/s width: 32 bits clock: 33MHz capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=half latency=64 link=no maxlatency=64 mingnt=32 multicast=yes port=MII speed=10MB/s resources: irq:20 ioport:a000(size=256) memory:d0301c00-d0301cff *-pci:1 description: Host bridge product: K8 [Athlon64/Opteron] HyperTransport Technology Configuration vendor: Advanced Micro Devices [AMD] physical id: 101 bus info: pci@0000:00:18.0 version: 00 width: 32 bits clock: 33MHz *-pci:2 description: Host bridge product: K8 [Athlon64/Opteron] Address Map vendor: Advanced Micro Devices [AMD] physical id: 102 bus info: pci@0000:00:18.1 version: 00 width: 32 bits clock: 33MHz *-pci:3 description: Host bridge product: K8 [Athlon64/Opteron] DRAM Controller vendor: Advanced Micro Devices [AMD] physical id: 103 bus info: pci@0000:00:18.2 version: 00 width: 32 bits clock: 33MHz *-pci:4 description: Host bridge product: K8 [Athlon64/Opteron] Miscellaneous Control vendor: Advanced Micro Devices [AMD] physical id: 104 bus info: pci@0000:00:18.3 version: 00 width: 32 bits clock: 33MHz configuration: driver=k8temp resources: irq:0 |
The fastest way is probably to go to a memory site (e.g. crucial.com) with the make and model number of your computer and let them tell you.
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You could use dmidecode. It is probably not installed by default. You should be able to install it from your distribution's package repository.
You should run dmidecode under the root account. My dmidecode listed the memory controller with supported speeds of 70 ns and 60 ns. It also listed the memory modules with speed listed as unknown. That shows that dmidecode can only show you what your motherboard is willing to show you. I had better luck using lshw under the root account. The board clock speed was listed under CPU information. |
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